A flea is very small, but can jump very high. For example, a flea that is 1/8 inch tall can jump 12

A flea is very small, but can jump very high. For example, a flea that is 1/8 inch tall can jump 12 inches in height. If a child who is 4 feet tall had the ability to jump like a flea, how high could she jump?

Set up a proportion of height to jump height where j is the jump height of the child:
1/8/12 = 4/j

Using our proportion calculator, we get:
j = 384 feet